City of Casey Victoria
Map of Melbourne showing City of Casey
Population	340,419 (2018)[1] (8th)
• Density	832.3/km2 (2,155.7/sq mi)
Established	1994
Area	409 km2 (157.9 sq mi)[1]
Council seat	Narre Warren
Region	Southeast Metropolitan Melbourne
State electorate(s)	Cranbourne Dandenong Gembrook Hastings Narre Warren North Narre Warren South Rowville
Federal Division(s)	Bruce Holt La Trobe
Website	City of Casey
LGAs around City of Casey: Knox Yarra Ranges Cardinia Greater Dandenong Frankston City of Casey Cardinia Mornington Peninsula Western Port Western Port

The City of Casey is a local government area in Victoria, Australia in the outer south-eastern suburbs of Melbourne. Casey is Victoria's most populous municipality, with a June 2018 population of 340,419.^[1] It has an area of 409 square kilometres (157.9 sq mi).

The city is named after Lord Casey, the 16th Governor-General of Australia, and was formed in 1994 by the merger of most of the City of Berwick with parts of Shire of Cranbourne (including Cranbourne itself), and the Churchill Park Drive estate within the City of Knox.^[2]